component
BQ2954SNTR
Public Made by Adomby adom
Texas Instruments Battery Management ICs, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"pins": [
{
"number": "1",
"name": "TM",
"type": "input",
"description": "Time-out programming input that sets the maximum charge time (1 to 24 hours) through an external R-C network, with a recommended C of 0.1 µF."
},
{
"number": "2",
"name": "CHG",
"type": "output",
"description": "Open-drain charge-active output that is driven low when the battery is removed, during a temperature hold, on a fault, or when charge is done, and sinks at least 5 mA with VOL ≤ VSS + 0.8 V."
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{
"number": "3",
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},
{
"number": "4",
"name": "VCOMP",
"type": "input",
"description": "Voltage loop compensation input that connects to an external R-C network to stabilize the regulated voltage."
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{
"number": "5",
"name": "ICOMP",
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"description": "Current loop compensation input that connects to an external R-C network to stabilize the regulated charge current."
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{
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"description": "Three-state input that selects the IFULL and IMIN fast-charge termination thresholds according to Table 4."
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{
"number": "7",
"name": "SNS",
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"description": "Charging current sense input that reads the battery current as the voltage developed across an external sense resistor, with VSNS = 0.250 V at IMAX."
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{
"number": "8",
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"type": "input",
"description": "Temperature sense input measured differentially against BAT-, using an external resistor-divider and NTC network to set the low and high temperature thresholds."
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{
"number": "9",
"name": "TPWM",
"type": "input",
"description": "Regulation timebase input that uses an external timing capacitor to VSS to set the PWM frequency, typically 100 kHz to 200 kHz."
},
{
"number": "10",
"name": "BTST",
"type": "output",
"description": "Battery test output that is driven high when no battery is present to provide a potential at the battery terminal, and sources at least 10 mA at VOH ≥ VCC − 0.8 V."
},
{
"number": "11",
"name": "LCOM",
"type": "output",
"description": "Common output for LED1 and LED2 that is high-impedance during initialization so DSEL and CSEL can be read, and sinks at least 30 mA with VOL ≤ VSS + 0.5 V."
},
{
"number": "12",
"name": "VSS",
"type": "power_in",
"description": "System ground; all voltages on the device are specified relative to VSS."
},
{
"number": "13",
"name": "VCC",
"type": "power_in",
"description": "Supply input at 5.0 V ±10% (4.5 V to 5.5 V recommended operating range, absolute maximum 7.0 V)."
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{
"number": "14",
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"type": "output",
"description": "Pulse-width modulated push-pull current-switching control output that enables charge current when high, with a maximum duty cycle of 80%."
},
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"number": "15",
"name": "LED1/CSEL",
"type": "bidirectional",
"description": "Charger display status 1 output that also serves as the CSEL input, latched at VCC rise, to select low-side or high-side current sensing."
},
{
"number": "16",
"name": "LED2/DSEL",
"type": "bidirectional",
"description": "Charger display status 2 output that also serves as the three-level DSEL input, latched at VCC rise, to select the LED display mode."
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{
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"unit": "V",
"min": -0.03,
"typ": null,
"max": 0.03,
"conditions": "Low-temperature fault",
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{
"name": "TS hysteresis threshold (VHTF) tolerance",
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{
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{
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"min": -0.03,
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"source": "datasheet"
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{
"name": "Under-voltage threshold at BAT",
"symbol": "VMIN",
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"min": -0.05,
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{
"name": "Recharge voltage threshold at BAT",
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"min": -0.05,
"typ": 1.92,
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{
"name": "Low cutoff voltage",
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{
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{
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{
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{
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{
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{
"name": "DSEL tri-state open detection",
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"unit": "µA",
"min": -2,
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{
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{
"name": "LED1, LED2, BTST source current",
"symbol": "IOH",
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"unit": "mA",
"min": -10,
"typ": null,
"max": null,
"conditions": "VOH = VCC - 0.5V",
"source_page": 14,
"source": "datasheet"
},
{
"name": "MOD source current",
"symbol": "IOH",
"kind": "electrical",
"unit": "mA",
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"conditions": "VOH = VCC - 0.5V",
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{
"name": "LED1, LED2, BTST sink current",
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{
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"conditions": "VOL = VSS + 0.8V",
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{
"name": "CHG sink current",
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{
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{
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{
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{
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"conditions": "ITERM",
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{
"name": "Charge timer resistor",
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